Merge pull request #6 from ajy/master

removing authentication requirements
Added fie upload
intial file upload html
completed the upload file
Add count_hits to do all the operations to return the counts data after uploading the file and loading data into DB. Add pandasjson as a requirement.
Return proper JSON
Ensuring the collection exists before using it to load into DataFrame. Return result of load operation.
Fix to_json error.
Use to_json of pandas instead of pandasjson
Fix for to_json
Add get_log_date().
intial code
upload now works